2024 Peterbilt 389, Cummins, X15, 565HP, Fuller 18 Speed Transmission, Sleeper, , , Stock # 1582941 Don't miss out on this new 2024 Peterbilt 389 tractor. This unit is powered by a Cummins X15 565HP 1900 torque engine partnered with an Eaton RTLO22918B 18 speed manual transmission. It features a 78 inch high roof sleeper...Come see it in person at Rush Truck Center in Fontana!